| Glass and Resonance
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| | information is analyzed by a DSP (Digital
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| We have all heard stories of how opera
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| | Signal Processor), which is used to
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| singers can shatter glass upon hitting a
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| | detect imperfections in the underlying
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| particular note. However, how plausible
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| | surface, and determine motion. Some
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| is this notion? In order to shatter
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| | materials, such as glass, mirrors or
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| glass, a singer's voice has to be able to
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| | other very shiny, uniform surfaces
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| match the frequency of the glass. (Every
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| | interfere with the ability of the DSP to
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| object has a resonant frequency, which is
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| | analyze the surface beneath the mouse.
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| the natural frequency at which an object
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| | Since glass is transparent and uniform,
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| vibrates.) If you blow on the edge of a
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| | the mouse is unable to pick up enough
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| glass, you will hear a resonant hum, and
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| | imperfections in the underlying surface
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| if you keep blowing, you can even create
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| | to determine motion.
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| a tune - this sound is the unique
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| | Mirrored surfaces are also a problem,
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| resonant frequency of the glass.
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| | since they constantly reflect back the
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| The singer would have to sing very
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| | same image, causing the DSP not to
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| loudly: precisely producing a note of
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| | recognize motion properly. When the
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| about 135 decibles, which is more sonic
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| | system is unable to see surface changes
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| boom than pertaining to anything musical.
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| | associated with movement, the mouse will
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| The human threshold for pain is about 120
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| | not work properly.
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| decibels. The note would have to be
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| | Glass and Household
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| maintained for the duration of at least
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| | Cleaning glass is the big 'bug bear' of
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| two to three seconds for the right
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| | most homeowners! The endless build up of
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| vibration to build up, so the glass could
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| | soap scum lurking on your tiles and soap
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| shatter. In the late 70s, laboratory
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| | racks, and the soapy film on shower doors
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| experiments with a professional soprano
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| | is like the invasion of Alien 5! Here are
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| and a trumpet player showed that neither
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| | a few handy hints on how to keep the
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| could shatter glass. The only singer who
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| | alien out of your home.
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| has apparently succeeded is the famed
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| | Some say that the best way to get the
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| tenor, Enrico Caruso, but the validity of
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| | film off glass doors is to use a no-wax
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| this claim is a matter of conjecture.
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| | floor cleaner. All you do is wipe it on
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| Glass and Wine
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| | and make sure you clean it off very well.
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| Why do wine glasses have such long
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| | Vinegar is a close second - you can also
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| stems? Wine enthusiasts proclaim that it
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| | add vinegar to your dishwasher or sink,
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| is essential in order to prevent the heat
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| | which will get rid of any soap residue
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| of one's hand on the glass from warming
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| | and give your dishes an extra sparkle.
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| the wine. Any drink that is chilled
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| | Ammonia can also clean glass. You can
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| should be in a glass with a stem. Equally
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| | also make your own ammonia solution by
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| important is the aesthetics of a fine
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| | combining ammonia and water. Use a spray
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| stem, which enhances the pleasure of the
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| | bottle and spray directly onto the
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| experience.
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| | surface. Use a sponge or stiff-bristled
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| By contrast, fine scotch or cognac is
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| | brush to scrub affected areas. Wipe
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| drunk from a snifter glass, which has a
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| | clean, and rinse well. Newspaper has
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| short stem. The stem in the snifter
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| | enough friction to clean the gunk off and
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| should be wedged between one's middle and
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| | is smooth enough to act as a cleaning
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| ring finger, with the palm and fingers
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| | cloth.Let soap scum buildup on glass be a
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| wrapped around the bowl of the glass, to
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| | thing of the past. Pilkington Glass has
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| gently warm the whisky/brandy and allow
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| | brought out a self-cleaning glass,
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| the aromas to come to the fore.
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| | guaranteed to rock the world of any
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| Glass and Computers
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| | homeowner. This innovative product,
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| Anyone who uses a computer knows that an
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| | conceived by the world-leaders in glass
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| optical mouse does not work on a glass
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| | making, meets all the relevant
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| table! Because optical mice use an LED
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| | international standards, and is able to
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| and a camera to rapidly, capture images
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| | perform in extreme conditions.
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| of the surface beneath the mouse. This
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